PSLE Tom spent
37 of his money to buy 4 identical files. He spent the rest of his money to buy another 5 such files and 4 identical notebooks.
- What fraction of Tom's money was spent to buy the 4 notebooks? Give your answer in the simplest form.
- For every 6 notebooks bought, 1 additional notebook was given free. How many notebooks would Tom get in total if he were to spend all his money to buy notebooks only?
(a)
Cost of 4 files =
37 of his money
Cost of 1 file
=
37 ÷ 4
=
37 x
14 =
328 of his money
Cost of 5 files
= 5 x
328 =
1528 of his money
Fraction of Tom's money spent to buy the 5 files and 2 notebooks
= 1 -
37 =
47 Fraction of Tom's money spent to buy the 4 notebooks
=
47 -
1528 =
1628 -
1528 =
128 (b)
128 of Tom's money = 4 notebooks
2828 of Tom's money = 28 x 4 = 112 notebooks
Number of free notebooks
= 112 ÷ 6
= 22 r 2
Total number of notebooks that Tom would get
= 112 + 22
= 134
Answer(s): (a)
128; (b) 134